all over the greatest washington, d.c. area, spots even they admit on camera they're not allowed into. >> it's even locked to us, but for whatever reason, the door is open, so i ran and got the camera. >> we showed the video to carol johnson with the national parks service. >> the actions on the video were inappropriate, they were disrespectful, and they're not representative of the hard work of the 22,000 park employees across the nation. it was very disappointing. >> reporter: the video shows multiple ways to gain access to restricted sections of the national mall clund underneath the washington monument, on top of the old post office pavilion and inside historical bridges. >> if this bridge starts going up, i'm going to free out. >> reporter: due to serious concerns about security, the i-team agreed not to show some of the access points. >> our initial concern was that the areas shown are secure.